White Light-Emitting Diodes Based on AgInS₂/ZnS Quantum Dots with Improved Bandwidth in Visible Light Communication

Overview

Journal Nanomaterials (Basel)

Date 2017 Mar 28

PMID 28344270

Citations 9

Authors

Cheng Ruan

Yu Zhang

Min Lu

Changyin Ji

Chun Sun

Xiongbin Chen

Hongda Chen

Vicki L Colvin

William W Yu

Affiliations

Soon will be listed here.

Abstract

Quantum dot white light-emitting diodes (QD-WLEDs) were fabricated from green- and red-emitting AgInS₂/ZnS core/shell QDs coated on GaN LEDs. Their electroluminescence (EL) spectra were measured at different currents, ranging from 50 mA to 400 mA, and showed good color stability. The modulation bandwidth of previously prepared QD-WLEDs was confirmed to be much wider than that of YAG:Ce phosphor-based WLEDs. These results indicate that the AgInS₂/ZnS core/shell QDs are good color-converting materials for WLEDs and they are capable in visible light communication (VLC).

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